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Impacts of urban morphology on reducing cooling load and increasing ventilation potential in hot-arid climate

Javanroodi, Kavan LU ; Mahdavinejad, Mohammadjavad and Nik, Vahid LU orcid (2018) In Applied Energy 231. p.714-746
Abstract
Cooling buildings in urban areas with hot-arid climate put huge loads on the energy system. There is an increasing trend in urban energy studies to recognize the urban design variables and parameters associated with the energy performance of buildings. In this work, a novel approach is introduced to investigate the impacts of urban morphology on cooling load reduction and enhancing ventilation potential by studying a high-rise building (target building), surrounded by different urban configurations, during six warm months of the year in Tehran at four major sections including: (1) generating 1600 urban case studies considering three parameters (Urban Density, Urban Building Form, and Urban Pattern) and modelling the urban morphology of... (More)
Cooling buildings in urban areas with hot-arid climate put huge loads on the energy system. There is an increasing trend in urban energy studies to recognize the urban design variables and parameters associated with the energy performance of buildings. In this work, a novel approach is introduced to investigate the impacts of urban morphology on cooling load reduction and enhancing ventilation potential by studying a high-rise building (target building), surrounded by different urban configurations, during six warm months of the year in Tehran at four major sections including: (1) generating 1600 urban case studies considering three parameters (Urban Density, Urban Building Form, and Urban Pattern) and modelling the urban morphology of Tehran based on a technique namely “Building Modular Cells”, (2) validation study of CFD simulation of the wind flow around buildings, (3) calculating the average cooling load and wind flow at the rooftop of the target building, and (4) investigating sixteen best urban configurations with the lowest cooling load and highest ventilation potential. Results indicate that urban morphology has a notable impact on the energy consumption of buildings, decreasing cooling load and increasing ventilation potential more than 10% and 15% respectively, compared to the typical cases. This work also proposes design solutions for architects and urban designers, based on Top 100 configurations (out of 1600), for improved energy performance and better ventilation of buildings in urban areas. (Less)
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Urban morphology, Urban energy, Cooling load, Ventilation, High-rise buildings, Hot-arid climate
in
Applied Energy
volume
231
pages
33 pages
publisher
Elsevier
external identifiers
  • scopus:85053778515
ISSN
0306-2619
DOI
10.1016/j.apenergy.2018.09.116
language
English
LU publication?
yes
id
147bd1a2-b398-4721-acab-2aa548d5feb3
date added to LUP
2018-09-28 21:26:36
date last changed
2021-10-10 04:48:19
@article{147bd1a2-b398-4721-acab-2aa548d5feb3,
  abstract     = {Cooling buildings in urban areas with hot-arid climate put huge loads on the energy system. There is an increasing trend in urban energy studies to recognize the urban design variables and parameters associated with the energy performance of buildings. In this work, a novel approach is introduced to investigate the impacts of urban morphology on cooling load reduction and enhancing ventilation potential by studying a high-rise building (target building), surrounded by different urban configurations, during six warm months of the year in Tehran at four major sections including: (1) generating 1600 urban case studies considering three parameters (Urban Density, Urban Building Form, and Urban Pattern) and modelling the urban morphology of Tehran based on a technique namely “Building Modular Cells”, (2) validation study of CFD simulation of the wind flow around buildings, (3) calculating the average cooling load and wind flow at the rooftop of the target building, and (4) investigating sixteen best urban configurations with the lowest cooling load and highest ventilation potential. Results indicate that urban morphology has a notable impact on the energy consumption of buildings, decreasing cooling load and increasing ventilation potential more than 10% and 15% respectively, compared to the typical cases. This work also proposes design solutions for architects and urban designers, based on Top 100 configurations (out of 1600), for improved energy performance and better ventilation of buildings in urban areas.},
  author       = {Javanroodi, Kavan and Mahdavinejad, Mohammadjavad and Nik, Vahid},
  issn         = {0306-2619},
  language     = {eng},
  pages        = {714--746},
  publisher    = {Elsevier},
  series       = {Applied Energy},
  title        = {Impacts of urban morphology on reducing cooling load and increasing ventilation potential in hot-arid climate},
  url          = {http://dx.doi.org/10.1016/j.apenergy.2018.09.116},
  doi          = {10.1016/j.apenergy.2018.09.116},
  volume       = {231},
  year         = {2018},
}